osmo-auc-gen: Print RFC3310 IMS HTTP-AKA style base64 nonce/res
This is useful when debugging IMS Authentication which uses
RFC3310 representation of the nonce and expected result.
Change-Id: Ibfa72410d8ff8e5b42063f1a12bff69ad2bebbb8
diff --git a/utils/osmo-auc-gen.c b/utils/osmo-auc-gen.c
index eb6c65b..446d8ec 100644
--- a/utils/osmo-auc-gen.c
+++ b/utils/osmo-auc-gen.c
@@ -1,7 +1,7 @@
/*! \file osmo-auc-gen.c
* GSM/GPRS/3G authentication testing tool. */
/*
- * (C) 2010-2012 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2010-2021 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
@@ -34,8 +34,20 @@
#include <osmocom/crypt/auth.h>
#include <osmocom/core/utils.h>
+#include <osmocom/core/base64.h>
#include <osmocom/gsm/gsm_utils.h>
+static void print_base64(const char *fmt, const uint8_t *data, unsigned int len)
+{
+ uint8_t outbuf[256];
+ size_t olen;
+
+ OSMO_ASSERT(osmo_base64_encode(outbuf, sizeof(outbuf), &olen, data, len) == 0);
+ OSMO_ASSERT(sizeof(outbuf) > olen);
+ outbuf[olen] = '\0';
+ printf(fmt, outbuf);
+}
+
static void dump_triplets_dat(struct osmo_auth_vector *vec)
{
if (vec->auth_types & OSMO_AUTH_TYPE_UMTS) {
@@ -53,10 +65,17 @@
printf("RAND:\t%s\n", osmo_hexdump_nospc(vec->rand, sizeof(vec->rand)));
if (vec->auth_types & OSMO_AUTH_TYPE_UMTS) {
+ uint8_t inbuf[sizeof(vec->rand) + sizeof(vec->autn)];
+
printf("AUTN:\t%s\n", osmo_hexdump_nospc(vec->autn, sizeof(vec->autn)));
printf("IK:\t%s\n", osmo_hexdump_nospc(vec->ik, sizeof(vec->ik)));
printf("CK:\t%s\n", osmo_hexdump_nospc(vec->ck, sizeof(vec->ck)));
printf("RES:\t%s\n", osmo_hexdump_nospc(vec->res, vec->res_len));
+
+ memcpy(inbuf, vec->rand, sizeof(vec->rand));
+ memcpy(inbuf + sizeof(vec->rand), vec->autn, sizeof(vec->autn));
+ print_base64("IMS nonce:\t%s\n", inbuf, sizeof(inbuf));
+ print_base64("IMS res:\t%s\n", vec->res, vec->res_len);
}
if (vec->auth_types & OSMO_AUTH_TYPE_GSM) {